package edu.colorado.ch02.hide;
// File LocationDemonstration.java
// This small demonstration program shows how to use the Location class
// from the edu.colorado.geometry package.


public class LocationDemonstration
{
   public static void main(String[ ] args)
   {
      final double STILL_X = -2.0;
      final double STILL_Y = -1.5;
      final int ROTATIONS = 2;
      
      Location still =  new Location(STILL_X, STILL_Y);
      Location mobile = still.clone( );     
      printData(still, mobile);
      
      System.out.println("I will rotate one location by two 90 degree turns.");
      specifiedRotation(mobile, ROTATIONS);
      printData(still, mobile);   
   }
   
   // Rotate a Location p by a specified number of 90 degree clockwise turns.
   public static void specifiedRotation(Location p, int n)
   {
      while (n > 0)
      {
          p.rotate90( );
          n--;
      }
   }
 
   // Print some information about two locations: s (a "still" location) and
   // m (a "mobile" location).  
   public static void printData(Location s, Location m)
   {
      System.out.println("The still location is at:  " + s.toString( ));
      System.out.println("The mobile location is at: " + m.toString( ));
      System.out.println("Distance between them:  " + Location.distance(s, m));
      if (s.equals(m))
         System.out.println("These two locations have equal coordinates.");
      else
         System.out.println("These two locations have different coordinates.");      
      System.out.println( );
   }
   
}

